import com.baidu.www.Test1;
import static java.lang.Math.*;
import java.util.Arrays;
import java.util.Date;

public class Test {


    public static void main(String[] args) {
        double x=20.0;
        double y=20.0;
        //double result = Math.sqrt(Math.pow(x,2)+Math.pow(y,2));
        //double result = sqrt(pow(x,2)+pow(y,2));
        double result = Math.sqrt(Math.pow(x,2)+Math.pow(y,2));
        System.out.println(result);
    }


    public static void main1(String[] args) {
        /*int[] arr = {1, 2, 3, 4, 5};
        String ret = Arrays.toString(arr);*/
        Date date1 = new Date();
        java.sql.Date date2 = new java.sql.Date(10);
        //System.out.println(ret);
    }

    /*public static void main(String[] args) {
        Test1 test1 = new Test1();
        System.out.println(test1.a);//不在一个包，无法使用
    }*/





    /*public static void main1(String[] args) {
        DateTest date1 = new DateTest();
        //date1.year=2024;
        date1.setyear(2024);
        System.out.println(date1.getYear());
        //date1.month=12;
        date1.setMonth(12);
        System.out.println(date1.getMonth());
        date1.day=7;

        date1.printDate();*/

    //DateTest date2 = new DateTest(2024, 12, 7);

}
